Clock mounting



Apri l 1Q, 1928.

W. D. CLARK CLOCK MOUNTING Fil ed May 6. 1927 2 Sheets-Sheet 1 INVNTOE M/ILLMM DOUGLAS CLARK.

IlWll BY ATTORNEY W. D. CLARK CLOCK MOUNTING FiledMay 6, 1927 2 Sheets-Sheet 2 :INYE/V7TOR llV/LL/AMDOUGLAS CLARK, w a M ATTQR NEY PATENTROFFICEQ WILLIAM D. CLARK, OFWASHINGTON, DISTRICT OF COLUMBIA.

cLocK MOUNTING.

Application filed May 6, 1927. Serial No. 189,447.

My invention relates broadly to clock mountings, and more particularly to qu ck detachable clock mountings for use on 111- strument boards and the like upon vehicles such as for example an airplane or an automobile.

The object of my invention is to provide a clock mounting that will be easily attached or detached from the instrument board but which will remain firmly in position without the possibility of accidentalloosening or rotation within the mounting when the clock is in position upon the instrument board.

Further objects of my invention will appear more fully hereinafter as the description of the method and apparatus is de veloped.

My invention consists substantially in the construction, combination and arrangement of parts associated therewith or as will be more fully hereinafter set forth as shown by the accompanying drawings and finally pointed out in the appended claims.

Reference is to be had to the accompanying drawings forming a part of this specification in which like reference characters indicate corresponding parts throughout the several views and in which Figure 1 is a side elevation of a clock mounted upon an instrument board with a portion broken away to show the embodiment of my invention.

Figure 2 is a sectional view on the line 22 of Figure 1.

Figure 3 is a sectional view of the adapter plate and the spring retaining member,

Figure 4 is a detail rear View of the parts shown in Figure 3.

Figure 5 is a sectional view of the keeper plate,

Figure 6 is a rear view of the keeper plate shown in Figure 5,

Figure 7 is a view similar to Figure 1 showing a modification thereof,

Figure 8 is a sectional view on the line 8-8 of Figure 7,

Figure 9 is an elevational view with a. portion broken away showing the manner of mounting the retaining clip upon the clock casing, and

Figure 10 is a detail rear view of the parts shown in Figure 9.

Referring to the drawings numeral 1 represents a portion of an instrument board having a rectangular aperture 2 into which is embedded a keeper plate 3 having flanged portions 4. The surface of the keeper plate 3 is mounted flush with 'the'surface of the instrument board as shown at 5 and is held in position by counter-sunkmachine screws 6 or other retaining means such that when a clock is not within the mounting there is presented an even surface over the instrument board.

In Figures 1 to 6 I have shown a device that may be adapted to any of the modern types of instrument board clocks for theobjects herein set forth. Numeral 7 designates an adapter plate attached to the back of the standard clock casing'8 'bymeans of bolts 9 which extend through the standard mounting lugs 10. Upon one face of the adapter plate there is mounted a spring clip 11 of the shape shown in Figures 1. and 8 that is rigidly affixed to the adapter plate by means of rivets 12. The spring clip is of such size that it securely fits within the keeper plate in the manner shown in Figure 1.

Referring to Figures 7 to 10 I have eliminated the adapter plate 7 and the lugs 10 of the standard clock casing and have produced a clock casing 8 upon which the spring clip 11 is mounted, in a manner similar to the mounting of the spring clip 11 on the adapter plate 7 as described with reference to Figures 1 6.

' In both types described 'the'method of mounting the clock upon the instrument board is to force the resilient spring clip into the rectangular aperture in the keeper plate until the offset portion 13 of the spring clip passes through the opening in the keepe'r plate. When the clip is in this position the rear of the adapter plate or the rear of the clock is firmly held against the face of the instrument board by the force exerted by the portion 15 of the spring clip that tends to spread the offset portions 13 which in turn exert a longitudinal tension upon the divergent portions 16 of the spring clip.

Any rotary motion of the clock in the mounting is prevented by making the width of'the spring clip 11 identical with the width of the rectangular opening in the keeper plate 3.

It will be understood that the above description and accompanying drawings comprehend only the general and preferred embodiment of my invention and that minor detail changes in the construction and arrangement of parts may be made within the scope of the appended claims without sacria a support.v

:port.

2. In a quick detachable clock mounting,

the combinationof -a clock casing, a rectangular spring elip rigidly attached thereto, said spring clip havinga plurality of divergent portions, a rectangular keeper plate engageable With said spring clip and means for mounting the keeper plate upon 3. In a quick detachable clockmounting,

. divergent portions and a cylindricalporwtion, a rectangulanikeeper plate engageable with said spring clip and means for mounting. the keeper plate upon a support.

-14. In a quick detachable clock mounting,

the combination of a clock casing, a, rec-- tangular spring clip rigidly attached there- .to, saidv spring clip having a* plurality of divergentportions and a cylindrical portion,

2 said cylindricalgportion havinga maximum 5. In a. quick detachable clockmounting, the combination ofanadapter plate, means for rigidly attaching the adapter plate to a clock, a spring cliprigi'dly attached: to the adapter plate, a keeper plate engageable tached to the adapter plate, a rectangular keeper plate engageable with the spring clip and means for mounting. the keeper plate upon a support.

. .7. In a quick detachable clock mounting,

the combination ofan adapter plate, means for rigidly attaching the adapter plate to a clock, a rectangular spring clip rigidly attached to the adapter plate, said spring clip having a plurality of divergent-portions, a

rectangular keeper plate engageable with the spring clip and means for mounting the keeper plate upon a support. the combination of a clock-casing, a re'c-, tangular spring clip rigidly attached there- .to, said spring clipqhaving a plurality of 8. In aquick detachable clock mounting, the combination of an. adapterplate,n1eans for rigidly attaching the adapterplate'to a clock, a rectangular spring clip rigidly attached to the adapter plate, said spring clip having a pluralityof divcrgentportions and a cylindrical portion, a rectangular keeper ,plate engageable with said spring. clip and means for mounting the keeper plate upon i a support.

:In a quick detachable clock mounting, the combination of an adapter plate, means for rigidly attaching the adapter plate to a clock, a rectangular springclip rigidly attached to the adapter; plate, said spring clip having a plurality ofdivergent portions and a cylindrical portion, said cylindrical portion having a maximum are greater than the maximum'distance between the divergent portions in a plane parallel With the face of the clock, a rectangularkeeper plate-enga eable with said spring clip and means or mounting the keeperplate upon-a support.

WILLIAM D. CLARK. 

